Product Overview
High-quality graphite tubes are widely used in vacuum furnaces, high temperature reactors, and thermal processing equipment as heating elements, protective tubes, and gas distribution tubes. Our graphite tubes are precision extruded and machined from isostatic or molded graphite, offering excellent thermal conductivity, uniform wall thickness, and consistent electrical resistance for reliable furnace performance.
Key Features
- Excellent thermal and electrical conductivity
- High temperature resistance up to 3000°C in inert atmosphere
- Good thermal shock resistance
- Precision machined inner and outer diameters
- Uniform wall thickness for consistent performance
- Available in various lengths and diameters
- Custom designs for special furnace applications
Technical Specifications
| Parameter | Unit | Standard Grade | High Purity Grade |
|---|---|---|---|
| Material | - | Molded Graphite | Isostatic Graphite |
| Bulk Density | g/cm³ | 1.65 | 1.80 |
| Inner Diameter | mm | 6 - 200 | 6 - 200 |
| Outer Diameter | mm | 10 - 250 | 10 - 250 |
| Max Length | mm | 2000 | 3000 |
| Electrical Resistivity | μΩ·m | 13 | 10 |
| Straightness | mm/m | 0.5 | 0.3 |
| Max Temp (Inert) | °C | 2800 | 3000 |
Applications
- Vacuum furnace heating elements (graphite tube heaters)
- High temperature protective and shielding tubes
- Gas distribution and diffusion tubes
- Thermocouple protection tubes
- Single crystal growth furnace components
- Semiconductor processing equipment
- Heat treatment furnace hardware
Why Choose Jincheng Graphite Tubes?
We manufacture precision graphite tubes and rods for furnace builders and thermal processing companies. Our tubes are produced with tight tolerances on inner diameter, outer diameter, and wall thickness, ensuring consistent electrical resistance and thermal performance. With a full range of graphite grades and custom machining capability, we provide graphite tube solutions for a wide variety of high temperature furnace applications.
FAQ
Q: What is the maximum length of graphite tube you can produce?
A: Standard production length is up to 2000mm for molded graphite tubes and 3000mm for isostatic graphite tubes. For longer lengths, we can provide multiple sections that can be joined using graphite connectors. Please specify your length requirements.
Q: Can you machine threads and flanges on graphite tubes?
A: Yes, we can machine custom features including external and internal threads, flanges, grooves, and end fittings on graphite tubes. Our CNC machining center handles complex geometries and tight tolerances for custom furnace component applications.
Q: What is the typical lead time for custom graphite tubes?
A: Standard size graphite tubes are usually in stock and ship within 3-5 days. Custom machined tubes typically take 10-15 working days depending on complexity and order quantity. Large quantity orders may require additional production time.
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